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Flight Reliability

DL 1488 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1488 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

80%
Arrive within 15 minutes
5 min
Average arrival delay
0.7%
Cancelled
7 min early
Median arrival delay

Based on 450 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon85%(75 flights)
  • Tue88%(48 flights)
  • Wed87%(47 flights)
  • Thu78%(73 flights)
  • Fri75%(71 flights)
  • Sat84%(56 flights)
  • Sun69%(75 flights)
On-time by departure window
  • 6–9 AM93%(30 flights)
  • 9 AM–12 PM90%(61 flights)
  • 12–3 PM89%(99 flights)
  • 3–6 PM73%(166 flights)
  • 6–9 PM72%(89 flights)
On-time trend by month
95%
May

Jun 74% → May 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%42
July 202547%43
August 202569%26
September 202582%17
October 202569%29
November 202588%43
December 202588%51
January 202694%32
February 202683%40
March 202671%35
April 202694%50
May 202695%37
Departures on time
80%
Diverted
0.4%
Flights flown
445
Months covered
12

Keep nerding

Based on 450 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.